i think nginx has an oauth_module which would allow you to use something like keycloak, if you want more than basic auth.

for apache mod_auth_openidc exists.

setting up an oauth-provider is not exactly trivial, but well documented and could be worth it if your other services offer oauth2-support or don’t feature a login at all.

for many people homelabbing is a way to gain knowledge they can use on the job.

other than that: proper single sign on across your services is nice even if you don’t expose them to anybody else.

http://web.archive.org/web/20200504112412/http://blogs.valvesoftware.com/linux/faster-zombies/

with the caveat that that was opengl vs directx9 accross operating systems and not necessarily “easy”. but it did make an important point that linux could run workloads like games in a very viable fashion.